Factory build sheet
2012 GMC Sierra Work Truck/Fleet/Base
Build 1GD322CL-C · 6.6L 8cyl · Four-wheel drive · Incomplete - Chassis CAB (Single CAB)
VIN positions 1 through 8 read 1GD322CL and position 10 reads C. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GD322CL and carries C in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 31 of them.
- Decoded Jul 7, 2026
- 31 known VINs
Factory specification
As filed by GMC with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 6.6 L
- Cylinders
- 8
- Configuration
- V-Shaped
- Engine model
- LGH
- Engine manufacturer
- DURAMAX
- Turbocharged
- Yes
- Fuel type
- Diesel
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Incomplete - Chassis Cab (Single Cab)
- NHTSA body type
- INCOMPLETE VEHICLE
- Doors
- 2
- Series
- 3500
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 3
- GVWR
- 10,001–14,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 1GD | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | 322CL | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | C | Model year — 2012 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
31 vehicles carry this build
Every VIN we have decoded to 1GD322CL-C shares the specification above.
- 31 Known VINs
- 1GD322CL 3CF186624
- 1GD322CL 7CF206163
- 1GD322CL 8CF135894
- 1GD322CL 1CF154819
- 1GD322CL 3CF128299
- 1GD322CL XCF199659
- 1GD322CL 8CF116715
- 1GD322CL 5CF199665
- 1GD322CL 5CF205478
- 1GD322CL 9CF127836
- 1GD322CL 6CF197844
- 1GD322CL 5CF118034
- 1GD322CL 1CF189456
- 1GD322CL 1CF127913
- 1GD322CL 8CF127150
- 1GD322CL 0CF128230
- 1GD322CL 0CF180506
- 1GD322CL 3CF201154
- 1GD322CL 2CF125927
- 1GD322CL 0CF156853
- 1GD322CL 1CF127331
- 1GD322CL XCF205783
- 1GD322CL XCF116179
- 1GD322CL 9CF166832
- 1GD322CL 8CF115094
- 1GD322CL 5CF204363
- 1GD322CL 8CF117976
- 1GD322CL XCF170551
- 1GD322CL 4CF190276
- 1GD322CL 5CF117871
- 1GD322CL 0CF163155
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Vehicle counts come from the 31 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.